Auto merge of #147812 - RalfJung:more-minicore, r=jieyouxu

use minicore for more tests

r? `@jieyouxu`

Unfortunately this doesn't work for all tests; minicore sometimes fails to build with errors like
```
rustc-LLVM ERROR: ILP32E cannot be used with the D ISA extension
```
and
```
error: the target features paca, pacg must all be either enabled or disabled together
```
These errors are meant to be triggered in the tests, but not in minicore.

It seems like all ``@compile-flags`` are forwarded to minicore. Maybe we should exclude `-Ctarget-feature` from that? Or provide some way to set flags only for the current file, not minicore?

Author: bors

tests/ui/repr/16-bit-repr-c-enum.rs

@@ -7,7 +7,7 @@
 //@ [msp430] needs-llvm-components: msp430
 //@ [msp430] compile-flags: --target=msp430-none-elf --crate-type=rlib
 //@ ignore-backends: gcc
-#![feature(no_core, lang_items, intrinsics, staged_api, rustc_attrs)]
+#![feature(no_core, intrinsics, staged_api, rustc_attrs)]
 #![no_core]
 #![crate_type = "lib"]
 #![stable(feature = "intrinsics_for_test", since = "3.3.3")]

tests/ui/repr/repr-c-dead-variants.rs

@@ -1,4 +1,4 @@
-#![feature(no_core, rustc_attrs, lang_items)]
+#![feature(no_core, rustc_attrs)]
 #![allow(dead_code)]
 #![crate_type = "lib"]
 #![no_std]

tests/ui/repr/repr_align_greater_usize.rs

@@ -9,7 +9,7 @@
 // We should fail to compute alignment for types aligned higher than usize::MAX.
 // We can't handle alignments that require all 32 bits, so this only affects 16-bit.
 
-#![feature(lang_items, no_core)]
+#![feature(no_core)]
 #![no_core]
 #![crate_type = "lib"]
 

tests/ui/sanitizer/cfg-kasan.rs

@@ -16,7 +16,7 @@
 //@ ignore-backends: gcc
 
 #![crate_type = "rlib"]
-#![feature(cfg_sanitize, no_core, lang_items)]
+#![feature(cfg_sanitize, no_core)]
 #![no_core]
 
 extern crate minicore;

tests/ui/sanitizer/cfg.rs

@@ -21,7 +21,7 @@
 //@[thread]compile-flags:  -Zsanitizer=thread
 //@ ignore-backends: gcc
 
-#![feature(cfg_sanitize, no_core, lang_items)]
+#![feature(cfg_sanitize, no_core)]
 #![crate_type="lib"]
 #![no_core]
 

tests/ui/static/static_sized_requirement.rs

@@ -1,7 +1,7 @@
 //@ add-core-stubs
 //@ check-pass
 
-#![feature(no_core, lang_items)]
+#![feature(no_core)]
 #![no_core]
 #![crate_type = "lib"]
 

tests/ui/target-feature/abi-incompatible-target-feature-attribute-fcw.rs

@@ -1,18 +1,13 @@
 //@ compile-flags: --crate-type=lib
 //@ compile-flags: --target=aarch64-unknown-none-softfloat
 //@ needs-llvm-components: aarch64
-#![feature(no_core, lang_items)]
+//@ add-core-stubs
+#![feature(no_core)]
 #![no_core]
 #![deny(aarch64_softfloat_neon)]
 
-#[lang = "pointee_sized"]
-pub trait PointeeSized {}
-
-#[lang = "meta_sized"]
-pub trait MetaSized: PointeeSized {}
-
-#[lang = "sized"]
-pub trait Sized: MetaSized {}
+extern crate minicore;
+use minicore::*;
 
 #[target_feature(enable = "neon")]
 //~^ERROR: enabling the `neon` target feature on the current target is unsound

tests/ui/target-feature/abi-incompatible-target-feature-attribute-fcw.stderr

@@ -1,13 +1,13 @@
 error: enabling the `neon` target feature on the current target is unsound due to ABI issues
-  --> $DIR/abi-incompatible-target-feature-attribute-fcw.rs:17:18
+  --> $DIR/abi-incompatible-target-feature-attribute-fcw.rs:12:18
    |
 LL | #[target_feature(enable = "neon")]
    |                  ^^^^^^^^^^^^^^^
    |
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
    = note: for more information, see issue #134375 <https://github.com/rust-lang/rust/issues/134375>
 note: the lint level is defined here
-  --> $DIR/abi-incompatible-target-feature-attribute-fcw.rs:6:9
+  --> $DIR/abi-incompatible-target-feature-attribute-fcw.rs:7:9
    |
 LL | #![deny(aarch64_softfloat_neon)]
    |         ^^^^^^^^^^^^^^^^^^^^^^
@@ -16,15 +16,15 @@ error: aborting due to 1 previous error
 
 Future incompatibility report: Future breakage diagnostic:
 error: enabling the `neon` target feature on the current target is unsound due to ABI issues
-  --> $DIR/abi-incompatible-target-feature-attribute-fcw.rs:17:18
+  --> $DIR/abi-incompatible-target-feature-attribute-fcw.rs:12:18
    |
 LL | #[target_feature(enable = "neon")]
    |                  ^^^^^^^^^^^^^^^
    |
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
    = note: for more information, see issue #134375 <https://github.com/rust-lang/rust/issues/134375>
 note: the lint level is defined here
-  --> $DIR/abi-incompatible-target-feature-attribute-fcw.rs:6:9
+  --> $DIR/abi-incompatible-target-feature-attribute-fcw.rs:7:9
    |
 LL | #![deny(aarch64_softfloat_neon)]
    |         ^^^^^^^^^^^^^^^^^^^^^^

tests/ui/target-feature/abi-incompatible-target-feature-attribute.riscv.stderr

@@ -1,5 +1,5 @@
 error: target feature `d` cannot be enabled with `#[target_feature]`: this feature is incompatible with the target ABI
-  --> $DIR/abi-incompatible-target-feature-attribute.rs:22:90
+  --> $DIR/abi-incompatible-target-feature-attribute.rs:17:90
    |
 LL | #[cfg_attr(x86, target_feature(enable = "soft-float"))] #[cfg_attr(riscv, target_feature(enable = "d"))]
    |                                                                                          ^^^^^^^^^^^^

tests/ui/target-feature/abi-incompatible-target-feature-attribute.rs

@@ -7,17 +7,12 @@
 //@[riscv] compile-flags: --target=riscv32e-unknown-none-elf
 //@[riscv] needs-llvm-components: riscv
 //@ ignore-backends: gcc
-#![feature(no_core, lang_items, riscv_target_feature, x87_target_feature)]
+//@ add-core-stubs
+#![feature(no_core, riscv_target_feature, x87_target_feature)]
 #![no_core]
 
-#[lang = "pointee_sized"]
-pub trait PointeeSized {}
-
-#[lang = "meta_sized"]
-pub trait MetaSized: PointeeSized {}
-
-#[lang = "sized"]
-pub trait Sized {}
+extern crate minicore;
+use minicore::*;
 
 #[cfg_attr(x86, target_feature(enable = "soft-float"))] #[cfg_attr(riscv, target_feature(enable = "d"))]
 //~^ERROR: cannot be enabled with